KR102302653B1 - Nail sticker and method for manufacturing of the same - Google Patents

Abstract

A nail sticker according to various embodiments of the present invention includes: an adhesive layer; a base layer disposed on the adhesive layer; a printed layer disposed on the base layer; and a volume gel layer disposed on the printed layer. The volume gel layer includes a first region (R1), and a second region (R2) disposed on both sides of the first region (R1), and the first region (R1) includes a portion of which the thickness is greatest.

Description

Nail sticker and method for manufacturing the same

Various embodiments of the present invention relate to a nail sticker and a method for manufacturing the same.

In general, in the case of nail art, a method of applying pigments such as nail polish of various colors to nails and toenails is applied.

However, this method of applying the liquid pigment takes a long time to cure after the pigment is applied, causing inconvenience to the user. In the case of nail art, it is not easy to draw by yourself, so you have to pay a high cost separately and receive a service from a professional. However, there was a problem that the effect was insufficient compared to the high cost expenditure.

On the other hand, gel nail stickers that can compensate for the shortcomings of liquid products such as nail polish have been released and used, but nail stickers are not flexible and stretchable, so they are unnatural in appearance and have a problem of poor fit and aesthetics. In addition, in the case of semi-cured nail stickers, two types of layers are required, a thermosetting layer and a UV curing layer, and the method of curing the thermosetting layer during production and curing the UV curing layer by consumers is mainly used, Since it is necessary to form a cured layer having different characteristics of the thermosetting layer and the UV curing layer, the process is cumbersome and the manufacturing cost is increased.

An object of the present invention is as a semi-cured gel nail sticker to solve the above-mentioned problems, since the volume gel layer located on the top is composed of one layer, so the manufacturing process is simple, and the thickness has a curved shape that gradually increases from the side. An object of the present invention is to provide a nail sticker with excellent usability and three-dimensional effect and a method for manufacturing the same.

A nail sticker according to various embodiments of the present invention includes an adhesive layer; a base layer disposed on the adhesive layer; a printed layer disposed on the base layer; and a volume gel layer disposed on the print layer, wherein the volume gel layer includes a first area and a second area disposed on both sides of the first area, wherein the first area comprises a portion having the thickest thickness. include

The composition for forming the volume gel layer includes an acrylate oligomer, an acrylate monomer, a photoinitiator, silica, dimethyl silicone oil, and a non-silicone-based adjuvant.

The thickest portion is characterized in that 300 μm to 700 μm.

The first region and the second region may include curved surfaces.

The volume gel layer is characterized in that the thickness gradually increases while forming a curved surface from the second area to the first area.

A method of manufacturing a nail sticker according to various embodiments of the present invention includes forming an adhesive layer; forming a base layer on the adhesive layer; forming a printed layer on the base layer; cutting the adhesive layer, the base layer and the printed layer in a nail shape; and printing the volume gel composition on the cut printed layer.

The volume gel composition is characterized in that it includes an acrylate oligomer, an acrylate monomer, a photoinitiator, silicone, dimethyl silicone oil, and a non-silicone-based auxiliary agent.

After the step of printing the volume gel composition, it further comprises the step of primary curing at a wavelength of 300 nm to 400 nm.

In the nail sticker of the present invention, the volume gel layer located on the top is composed of one layer, so the manufacturing process is simple and the cost can be reduced. In addition, since the thickness of the volume gel layer has a curved shape that gradually increases from the side to the center, the lower side part can be perfectly adhered to the nail, and there is no pinching when washing or turning the hair through this adhesion. In addition, it is hygienic as it can prevent mold caused by scale.

Since the nail sticker of the present invention has a curved shape and a thick thickness, it is excellent in three-dimensional effect and aesthetics. In addition, even if scratches or dents are formed through a specific composition, the original shape can be quickly restored. In addition, since it can be cured in a wide wavelength range, it can maintain 95% or more of external curing and 50% of rapid curing during manufacturing, and the rest can be cured by LDE lamps or natural curing by consumers.

1 is a perspective view of a nail sticker of the present invention.
FIG. 2 is a cross-sectional view showing a cross-section taken along line A-A' of FIG. 1 .
3 is a cross-sectional perspective view of the nail sticker of the present invention.
4 is a cross-sectional perspective view of a conventional nail sticker.
5 is a view of a method for manufacturing a nail sticker of the present invention.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. The examples and terms used therein are not intended to limit the technology described in this document to specific embodiments, and should be understood to include various modifications, equivalents, and/or substitutions of the embodiments.

1 and 2 , the nail sticker of the present invention is a semi-curing nail sticker and may include an adhesive layer 100 , a base layer 200 , a printing layer 300 , and a volume gel layer 400 .

Semi-hardening nail sticker refers to a nail sticker in which the volume gel layer is partially cured during manufacture and the rest is cured by the consumer.

The nail sticker of the present invention includes an adhesive layer 100 on the lower side. The adhesive layer 100 may be adhered to the nail to which the nail sticker is to be attached. Meanwhile, although not shown in the drawings, the adhesive layer 100 is attached to the release paper, and the release paper may be removed when the user attaches the nail sticker to the nail.

A base layer 200 may be disposed on the adhesive layer 100 . The base layer 200 may include polyurethane (PU).

The print layer 300 may be disposed on the base layer 200 . The print layer 300 may impart various colors and patterns to the nail sticker. For example, the printing layer 300 may be formed of color ink. The color ink includes CMYK, and C is blue, M is red, Y is yellow, and K is black. can be

The volume gel layer 400 may be disposed on the uppermost portion of the nail sticker and exposed to the outside. The volume gel layer 400 may be in a semi-cured state. That is, the volume gel layer 400 may be in a state in which the external curing is made by about 95% or more and the fast curing is made by about 50%. The rest of the part can be cured by the LED lamp or naturally cured after the consumer attaches the nail sticker.

The composition for forming the volume gel layer 400 may include an acrylate oligomer, an acrylate monomer, a photoinitiator, silicone, dimethyl silicone oil, and a non-silicone-based auxiliary agent.

Specifically, based on the total weight of the volume gel layer composition, acrylate oligomer is 77 to 85 parts by weight, acrylate monomer is 4 to 6 parts by weight, photoinitiator is 5 to 7 parts by weight, silica is 0.5 to 1.5 parts by weight, dimethyl silicone oil is 1.5 to 3.5 parts by weight and the non-silicone-based adjuvant may be included in an amount of 4 to 5 parts by weight. Through the composition within this specific numerical range, the volume gel layer 400 printed with the volume gel layer composition may be manufactured in a curved shape with the thickest center portion. In addition, even if a scratch or a dent due to the scratch occurs, a restoring force that can be quickly restored to the original shape may be imparted. In addition, the volume gel layer composition of this composition has a broad curing wavelength range of 280 nm to 400 nm of UV gel, and during production, primary curing is performed with a wavelength of 300 nm to 400 nm to achieve more than 95% of external curing, and rapid curing is 50 % level can be maintained.

Specifically, when the acrylate oligomer is included in less than 77 parts by weight, the nail sticker may become too hard and difficult to attach to the curved nails of ordinary consumers. In addition, when the acrylate oligomer is included in more than 85 parts by weight, the nail sticker may become too flexible and may be vulnerable to deformation. Acrylate oligomers are UV-reactive resins that have flexible physical properties before curing and soft properties after curing. Specifically, the acrylate oligomer may be a methacrylic acid-ethyl acrylate copolymer.

When the acrylate monomer is included in less than 4 parts by weight, the nail sticker may become too hard, and the adhesion may decrease when attached to the curved nails of ordinary consumers. In addition, when the acrylate monomer is included in more than 6 parts by weight, the flexibility and elongation of the nail sticker may be deteriorated. Specifically, the acrylate monomer may be trimethylolpropane triacrylate.

The photoinitiator may be 1-Hydroxy Cyclohexyl Phenyl ketone. The photoinitiator of 1-hydroxy cyclohexyl phenyl ketone has excellent transparency after curing. When less than 5 parts by weight of such a photoinitiator is included, the curing rate is lowered, and deformation may easily occur. When the photoinitiator is included in more than 7 parts by weight, the curing rate is too fast, and natural curing may occur during the manufacturing process or distribution process, which may make it difficult for consumers to attach the nail sticker.

Silica can impart hydrophilicity to the volume gel layer 400 so that the volume gel layer can be cured in a wide wavelength range of 280 nm to 400 nm. The silica may be silica nanoparticles with a size of 10 to 20 nm. Such silica may be used in the form of colloidal silica dispersed in a solvent such as methanol, ethanol or isopropanol. When silica is included in less than 0.5 parts by weight, the effect of imparting hydrophilicity may be deteriorated. When silica is included in an amount greater than 1.5 parts by weight, fairness may be deteriorated.

Dimethylpolysiloxane can remove air bubbles in the volume gel layer composition and impart gloss. When the dimethyl silicone oil is included in less than 1.5 parts by weight, the role of removing air bubbles may be insignificant. When dimethyl silicone oil is included in more than 3.5 parts by weight, fairness may be deteriorated.

The non-silicone-based adjuvant may make the other components flexible in the volume gel layer composition, thereby improving the restoring force of the volume gel layer 400 . If less than 4 parts by weight of the non-silicone-based adjuvant is included, the restoring force may be insignificant. If more than 5 parts by weight of the non-silicone-based adjuvant is included, the volume gel layer 400 may be too flexible to be susceptible to deformation. For example, as the non-silicone-based adjuvant, BYK-55 manufactured by BYK-Chemie may be used.

Meanwhile, in addition, a diluent may be further included. The diluent is 2-ethylhexyl (meth) acrylate, 2-dicaprolactone ethyl acrylate, cyclohexyl (meth) acrylate, phenoxyethyl (meth) acrylate, isobornyl (meth) acrylate, acryloylmol Poline, N-vinyl pyrrolidone, N-vinyl caprolactam, dimethylaminoethyl (meth) acrylate, tripropylene glycol di (meth) acrylate, cyclopentenyl (meth) acrylate, tricyclodecane dimethanol di (meth) ) acrylate, and one or two or more types may be mixed from the group consisting of trimethylolpropane tri(meth)acrylate.

The nail sticker of the present invention can implement a semi-hardened nail sticker with only one volume gel layer 400 . Conventionally, two types of layers, a thermosetting layer and a UV curing layer, are required to implement a semi-cured nail sticker, and the thermosetting layer is cured during production, and the consumer cures the UV curing layer. That is, since it is necessary to form a cured layer having different characteristics of the thermosetting layer and the UV curing layer, the process is cumbersome and the manufacturing cost is increased. In the present invention, the volume gel layer composition having the above composition has a wide UV gel curing wavelength range from 280 nm to 400 nm, and during production, primary curing is performed at a wavelength of 300 nm to 400 nm to achieve more than 95% of surface curing and rapid curing can be maintained at the 50% level. The rest can be cured by the consumer using an LDE lamp or natural curing.

The volume gel layer 400 may include a first region R1 and a second region R2 disposed on both sides of the first region R1. That is, the first region R1 may be a region disposed in the center of the volume gel layer 400 , and the second region R2 may be a side region of the volume gel layer 400 .

2 and 3 , the volume gel layer 400 may gradually increase in thickness while forming a curved surface from the second region R2 to the first region R1 . That is, the outermost portion of the second region R2 may have the smallest thickness, and as the thickness increases toward the first region R1 , the first region R1 may include a portion having the thickest thickness T. Therefore, when a consumer attaches a nail sticker, since the height of the side is the lowest, it can be perfectly adhered, and there is no pinching when washing or turning the hair through this adhesion. In addition, it is hygienic as it can prevent mold caused by scale.

Meanwhile, referring to FIG. 4 , the conventional nail sticker coats the volume gel layer 40 and then cuts it to fit the shape of the nail, so that the cut cross section forms a vertical angle. Therefore, it is unnatural in appearance, and when the hair is washed or turned, the hair is caught in the side part, causing inconvenience. Also, mold can form due to the build-up of scale.

2 and 3 , the portion having the thickest thickness T in the first region R1 may have a thickness of 300 μm to 700 μm. This is very thick compared to the thickness of the UV coating gel of the conventional nail sticker of 100 μm to 150 μm. Through this, the nail sticker of the present invention can have improved three-dimensional effect and luminosity, and thus has excellent aesthetics. The nail sticker of the present invention has a thickness of 300 μm to 700 μm at the thickest part of the volume gel layer 400, yet it is soft and has excellent restoring force. That is, the nail sticker of the present invention is quickly restored to its original shape even when scratches or dents are formed in the volume gel layer 400 part.

Hereinafter, a method for manufacturing a nail sticker according to various embodiments of the present invention will be described.

Referring to FIG. 5 , the adhesive layer 100 may be first formed, the base layer 200 may be formed on the adhesive layer 100 , and then the printed layer 300 may be formed on the base layer 200 . Thereafter, the adhesive layer 100 , the base layer 200 , and the printing layer 300 may be cut in a nail shape.

Thereafter, the volume gel composition may be printed on the adhesive layer 100 , the base layer 200 , and the printing layer 300 cut in the form of a nail. In this case, it may be printed by a screen printing method. Conventionally, after the adhesive layer 100, the base layer 200, the printing layer 300, and the volume gel layer 400 are all formed, the cut surface is cut in the form of a nail to form a right angle. Since the volume gel composition having the composition is printed on the cut adhesive layer 100 , the base layer 200 , and the printing layer 300 , it can be manufactured in a curved shape whose thickness is gradually increased. That is, since the volume gel composition has a specific composition, the UV gel coating ink may be collected from the second region R2 to the first region R1 after screen printing and may have a curved shape in which the thickness is gradually increased.

Next, the printed volume gel composition is first cured with a wavelength of 300 nm to 400 nm. In the present invention, the volume gel layer composition having the above composition has a wide UV gel curing wavelength range of 280 nm to 400 nm, and during production, primary curing is performed at a wavelength of 300 nm to 400 nm to achieve 95% or more of external curing and rapid curing can be maintained at the 50% level. The rest can be cured by the consumer using an LDE lamp or natural curing.

Features, structures, effects, etc. described in the above-described embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiments may be implemented by modification. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (8)

adhesive layer;
a base layer disposed on the adhesive layer;
a printed layer disposed on the base layer; and
It includes a volume gel layer disposed on the print layer,
The volume gel layer includes a first area and a second area disposed on both sides of the first area,
The first region is characterized in that it includes the thickest portion,
The composition for forming the volume gel layer contains 77 to 85 parts by weight of the acrylate oligomer, 4 to 6 parts by weight of the acrylate monomer, 5 to 7 parts by weight of the photoinitiator, 0.5 to 1.5 parts by weight of the silica, and 0.5 to 1.5 parts by weight of the dimethyl based on the total weight of the composition. A nail sticker, characterized in that the silicone oil is contained in an amount of 1.5 to 3.5 parts by weight and 4 to 5 parts by weight of the non-silicone-based auxiliary agent. delete According to claim 1,
The thickest portion of the nail sticker, characterized in that 300 μm to 700 μm. According to claim 1,
The nail sticker, characterized in that the first area and the second area include a curved surface. According to claim 1,
The nail sticker, characterized in that the volume gel layer gradually thickens while forming a curved surface from the second area to the first area. forming an adhesive layer;
forming a base layer on the adhesive layer;
forming a printed layer on the base layer;
cutting the adhesive layer, the base layer and the printed layer in a nail shape; and
Comprising the step of printing the volume gel composition on the cut printed layer,
The volume gel composition contains 77 to 85 parts by weight of an acrylate oligomer, 4 to 6 parts by weight of an acrylate monomer, 5 to 7 parts by weight of a photoinitiator, 0.5 to 1.5 parts by weight of silica, and 1.5 parts by weight of dimethyl silicone oil based on the total weight of the composition. to 3.5 parts by weight and the non-silicone-based auxiliary agent in an amount of 4 to 5 parts by weight. delete 7. The method of claim 6,
After the step of printing the volume gel composition,
A method for manufacturing a nail sticker, characterized in that it further comprises the step of primary curing with a wavelength of 300 nm to 400 nm.

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